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Letters Patent No. 74,796, dated February 25, 1868.

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Be it known that I, C. vH. CAR-vER, of Taunton,rin the county of Bristol, and State of Massachusetts, have invented a new and useful Improvement in Ohurns; and I dp hereby declare that the following'is alfull, clear,

and exact description thereof, which will enable those skilled in the art to make and use the same, reference.

being had to the accompanying-drawings, forming'part of this specification, in which- Figure l is a` vertical section of my improved churn. v Figure 2 is adetail view illustrating the operation of the guard-bar. Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved churn, simple in construction, easily cleaned, easily operated, and which will do its work quickly and thoroughly; and it consists in the construction and .combination of the various parts, as hereinafter more fully described. p

A is tho platform, upon which the'churn B stands. To the ends ofthe platform A areattached 'the standards C, the upper ends of whichvare connected and held in their p'roper vrelative positions by-the cross-bar D, t-o which is attached .the gearing by which the dasher is operated. The churn B may be secured in proper position upon the platform 4A by cleats or flanges formed upon or'attached to the said platform. The churn B is formed in the usual manner, except that it has two or more inclined flanges, b', attached to its inner surface. The anges 6' are inclined in such a direction that when the dasher is turned forwardorin the usual direction, the said ribs or flanges b will intercept and break the currents formed by said flasher, and at the same time tend to guide or direct the cream towards the bottom of the churn, throwing saidcream into violent agitation. E is the dasher, which is' made in the form o t a double-threaded screw, each thread making about or a little more than half a revolution, so that by turning the dasher forward the tendency'will be to force'the cream downwards towards the bottom of the churn, and at the same time outwards, to be acted upon by the inclined ribs or ilanges la. F is the dasher-shaft, to the lower end of which is attached the screw-dasher E, and to the upper end of which is attached a small gear-wheel, G. lbe dasher-shaft or handlF'revclves in bearings in the clamp H, which is made in substantially the form shown in iig. 1,' that is to say, with two jaws, L, to pass, one above and the other below the cross-bar D, with two bearings, h2', for the dasher-shaft F, and with an arm or central part, h3, projecting in front, upon which is formed or to which is attached a gudgeon for the crank-wheel I to revolve upon. J is a set or clamping-screw, which passes in through the lowerjaw t, and presses against the lower side of the bar D, to secure the said clamp to the said bar.` The'screw J may have a small disk or plate attached or swivelled to its forward end, to prevent it from injuringthe said bar. `To the rear side of the wheel I is attached, or upon it is formed, a gear-wheel, K, the teeth of which mesh into the teeth of the small gearwhecl G, and to its forward side is attached a crank, L, by means of which motion is given to tbc dasher. M is a guard-bar or plate, one end of which is pivotcd to the cross-bar D near one end, and the other end has a. hole formedin it,` which passes over and catches vupon a screw or pin-head attached to the cross-bar Dat its. other cud. p The middle part of the guard-bar M projects downward, so as to touchor nearly touch the upper end ofthe flasher-shaft F, to prevent its working up while being operated. l i

By detaching the lfree end of the guard-bar M and raising it up, the dasher-shaft Fmay be raised vertically, to raise the dasher E out ofthe churn B, so thatthe said `churn maybe readily removed for convenience in 'removing the butter and buttermilk and putting in the cream.

I claim asnew, and desire to secure by Letters Patent- Y. l.. The combination ofthe screw-dasher E, constructed as described, with the churn B, having two or more inclinedribs or flanges, b', attached to its inner surface, `substantially as herein `shown and described., and for the purpose set forth.

2. The combination ofthe clamp H, constructed substantially as herein shown and described, that is to say, with jaws t, bearings h2, and arm h3 with the vdasher-shai't F and crank-wheel I, as and for the purpose set forth.' 'lhe above specification of my invention signed by me, this 30th day of December, 1867. v

o. H. CARVER,

Witnesses:

JAMES H. DEAN, ALBERT B. THOMAS. 

